{"instruction": "You are an expert in event extraction. Please extract events from the input that conform to the schema definition. Return an empty list for events that do not exist, and return NAN for arguments that do not exist. If an argument has multiple values, please return a list. Respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "trigger": true, "arguments": ["Treatment", "Treatment.Dosage", "Subject.Age", "Treatment.Drug", "Treatment.Time_elapsed", "Subject.Race", "Treatment.Disorder", "Treatment.Duration", "Subject.Population", "Treatment.Route", "Combination.Drug", "Effect", "Treatment.Freq", "Subject"]}, {"event_type": "adverse event", "trigger": true, "arguments": ["Treatment", "Treatment.Disorder", "Subject.Gender", "Combination.Drug", "Treatment.Drug", "Treatment.Time_elapsed", "Treatment.Duration", "Subject.Race", "Treatment.Route", "Subject.Disorder", "Subject.Age", "Subject", "Treatment.Dosage", "Effect", "Treatment.Freq", "Subject.Population"]}], "input": "In the second case, five cardiac arrests due to ventricular tachycardia and fibrillation occurred during several hours after beginning a trial of bretylium maintenance therapy for complex ventricular ectopy."}
{"potential therapeutic event": [], "adverse event": [{"trigger": "occurred ", "arguments": {"Treatment": "several hours after beginning a trial of bretylium maintenance therapy", "Treatment.Disorder": "complex ventricular ectopy", "Subject.Gender": "NAN", "Combination.Drug": "NAN", "Treatment.Drug": "bretylium", "Treatment.Time_elapsed": "several hours after", "Treatment.Duration": "NAN", "Subject.Race": "NAN", "Treatment.Route": "NAN", "Subject.Disorder": "NAN", "Subject.Age": "NAN", "Subject": "In the second case", "Treatment.Dosage": "NAN", "Effect": "five cardiac arrests due to ventricular tachycardia and fibrillation", "Treatment.Freq": "NAN", "Subject.Population": "NAN"}}]}